Together, our musculature and skeletal system form a functional unit. The muscles, tendons, ligaments and fascia (connective tissue membrane) connected to the bone structures (spinal column, pelvis, skull, etc.) must together all be in balance in terms of tensile strength and load-bearing capacity.
The term 'tensegrity' (actually comes from architecture and is an amalgamation of tension and structural integrity ) refers to this functional unit. It refers to tensile strength and load-bearing capacity. In construction, tensile forces are absorbed in flexible steel cables, similar to muscles, ligaments and fascia. Whereas pressure forces are absorbed in steel or wooden bars, similar to our skeleton. Even though our skeletons are unstable, we are still able to stand upright.
The muscles have several tasks, namely:
Maintaining a certain posture through muscle tension
Protecting soft tissues/organs (e.g. the abdominal cavity).
Producing heat. Muscles are the most important producers of heat, for example, during strenuous activity.